Liquid-fuel burner



' ,'Aug 31,1926.

y.Ls STRING LIQUID FUEL BURNER Filed June 24, 1924 fgli www Patented Aug. 31NL 1926.

UNITED STA'E'ELS PATEN'E' JOSEPH S. STRING, OF NEVI' HAVEN, CONNECTICUT, ASSGNOR TO J'. S. &. J. F. STRING INCORPORATED, 01':` NEW HAVEN, CONNECTICUT, A CORPORATON OF CONNECTI- CUT.

LIQUID-FUEL BURNER.

Application led .Tune 24, 1924. Serial-No. 721,986.

My invention relates to that type of hydrocarbon burners in which the fuel is exteriorly atomized by means of air or steam or any other expansive fluid.

The principal object of the invention is the production of a hydrocarbon burner of the type specified in which the size of the discharge opening for the expansive fluid may be quickly contracted or enlarged to meet varying conditions whereupon the size of the flame resulting from the combustion of the atomized fuel may be expeditiously increased or decreased as desired.

A further object of the invention is the production of a burner of the type specified in which the width and length of the discharge opening for the expansive fluid may be simultaneously increased or decreased to increase or decrease the volume of the expansive fluid depending on the amount of fuel to be burned, without however, altering the angularity of the horizontal spread of the fuel.

Other and further objects and advantages of the invention will appear from the accompanying description, the invention consisting in the novel burner and parts and A.,combinations thereof hereinafter more particularly described and then specified in the claims. Y

Referring to the accompanying drawing illustrating apractical embodiment of my invention:

Fig. 1 is a side elevation of my improved hydrocarbon burner.

Fig. 2 is a longitudinal section taken therethrough.

Fig. 3 is a bottom plan view thereof and Fig. 4 is an end elevation thereof.

Referring to the accompanying drawings in which like characters of reference indicate corresponding parts in all the views:

1 indicates the body of the burner, said body being provided with a fuel passage way 2 adapted to be connected at its rear end 3 by a pipe (not shown) 4with a source of fuel supply such as oil. Said body is also provided with an inner chamber 4 which receives an expansive fluid such as air or steamthrough a pipe (not shown) adapted to be connected to a source of expansive fluid supply and to the inlet opening 5 of said chamber., The body 1 is preferably provided with a rearwardly-extending, interiorly screw-threaded extension 6 receiving a screw-threaded stem 7 extending therethrough, said screw-threaded stem 7 being interiorly screw-threaded as at 8 and receiving a screw-threaded spindle 9. rlhe threads of thel stem 7 are preferably right-handed, while those of the spindle 9 are left-handed or vice-versa. The stem 7 is provided with a collar 10 acting as a stop to limit the forward threading movement of said stem in the extension 6, the right or unthreaded portion of said stem which I have. designated 11, being provided with an operating arm or handle 12.

rlhe forward end of the body of the burner is rprovided with an opening 13 having side walls 14 extending forwardly from said body. Seated on said side walls and detachably secured to the forward face ofthe,-

in an excess oil in saidassaffewa willk flow back therethrough into the source of fuel supply thereby preventing waste thereof. The base of the cap 15 is provided with a groove 18 centrally disposed thereof, the sides of which groove preferably flare or are inclined outwardly as clearly shown in Fig. 3, so that when the oil flowsthrough the slot 17 Yand is atomized by the atomizing fluid, it will be given a flat fan-shaped spread or direction.

Rotatably mounted in suitable depressions or seats provided in the opposite walls of the chamber 4 are the discs or annular side walls 19 of a drum 2O the body of which is provided with an enlarged inlet opening 21 communicating with the chamber 4 and with a somewhat smaller discharge opening 22 adapted to communicate with the opening 13. V

The side Vwalls of the discharge opening 22 of the drum are tapered or are inclined 26,'the forward end of said fork being loosely mounted on a pin 27 the endsof which are secured to the annular side walls 19 of the drum 20. The point of connection of the ends of said pin 27 with the side walls 19 is considerably off cen-ter as respects said side walls, as clearly shownin Fig. 2. To rotate `the .drum 2.0 whereby communication may be had between the fchamber 4 and the opening 13 through the opening 21 and discharge opening 22, -a. mereturning ofthe handle 12 is necessary :as is obvious, the fact that the. stem 7 and spindle f9 are oppositely threaded acting to produce 4a yquick motion of the fork` 26 and in consequence a quick rotation olf the drum.

l/Vhen fuel is forced .through the passageway ,2 it .enters thel chamber 16, passes through the slot 17V and is atoinized by the expansive fluid which is forcedthrough the inlet opening v5 into the ch'amberri and through the inlet yand outlet openings 21 and 22 respectively of the drum. lt is then igynited by any ,suitable flame `(not shown.)

When the fuel leaves the slot 17 it is spread out by the expansive fluid in `a fan-shaped direction by the groove 1,8 which :acts as a guide therefor. To meet varying conditions the thickness `of the flame may be regula-ted .by rotation of the drum whereby the size of the outlet opening 22 is varied and in consequence the amount of expansive fluid which may be forced therethrough. How-- ever, irrespective of theincrease or decrease ofthe size of the outlet opening 22 and the consequent variation in the thickness of the flame, the angularity of the horizont-al spread of the'fuel is'notivaried for therea- .son that when the length of the opening 22 is increased or decreased the width thereof is simultaneously increased or decreasedv because of the inclination of the sidewalls of said opening. Y

-Various modifications may beresorted to Y without departing from the spirit of the invention as set forth in the appended claims.

What I claim as my invention is 1. A hydrocarbon burner provided with 'a fuel passageway and with an atomizing fluid chamber, a rotatable hollow drum mounted in saidchamber and provided with an inlet open-ing communicating with said chamber and with an outlet'opening through which the fluid passes into a space adjacent the fuel passageway outlet.

t 2. hydrocarbon yburner provided with a fuel passageway having an outlet opening,

. members said rotatable member.

said burner being provided with av fanshapedgroove adjacent said opening and an atomizing fluid passageway in said burner having an outlet opening adjacent said fanshaped groove vand adapted to be varied in length `and width independently of they fuel passage outlet. v

3, A hydrocarbon burner Vprovided with a fuel passageway and an vatomiziing fluid chambena rotatable drum inount-ed in said chamber and provided with an outlet opening the length and width of which may be simultaneously increased or diminished and a fuel passageway outlet adjacent .said outlet opening. Y l f 4. A hydrocarbonburnerjcomprising za body provided with a Yfuel passageway, an

`atomizing Afluid chamber .and an opening communicating with said atomizing fluid chamber and a rotatable member in said chamber provided with yan inlet opening Vcommunicating,with said chamber vand an outlet openingV kadapted to communicate with the opening in said body and having length and width.simultaneously increased or -.di-

minished by rotation of the rotatable member anda fuel passageway 4outlet adjacent said outlet opening` A :hydrocarbon burner lcomprising a cap being provided with .-a fuel chambery-and c with an outlet opening therefrom into a flaring groove in the lower edge ofthe cap over the opening in said body.

6. A hydrocarbon .burner-comprising a,

body provided with afuel passageway and with an atcmizing fluid chamber, a rotatable member mounted in said fluid chamber and adapted to have the atomizingfluid discharged therethrough, oppositel'y threaded connected with saidA rotatable member and means whereby said oppositely" Y threaded membersl may be actuated to-rotate 7.` hydrocarbon burner provided with a. bodyprovi-ded with a fuel passageway, an atomizingffluid chamber, :a rotatable drum ymounted in said .atomizing fiuid chamber adapted to have the atomizing fluid discharged therethrough, a screw-threaded stein threading through said body, a screwthreaded spindle threading within an opening in said stein, a connecting member pivotedl to said spindle and to said drum' and means for yactuating said stem to rotate said drum.

8. A hydrocarbon burner provided 'with a.:

Y fuel passageway and with an atomizing fluid chamber, a. rotatablejdrumprovided with annular side Walls rotatably mounted in the side Walls of said chamber and With inlet and outlet openings through Which the atomizing fluid is adapted to be discharged, oppositeiy threaded members mounted in said body, means connecting said drum and said oppositely threaded members and means for Signed at Neu7 York in the county of New 10 York and State of New York this 23rd day of June A. D. 1924.

JOSEPH S. STRING. 

